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AdvantEDGE Optical Dissolved Oxygen RDO® Electrode

AdvantEDGE Optical Dissolved Oxygen RDO® Electrode
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The AdvantEDGE Optical Dissolved Oxygen RDO® Electrode uses the latest technology to measure dissolved oxygen (DO) in demanding environments. The AdvantEDGE Series™ Optical Dissolved Oxygen RDO® sensor o­ffers several advantages for monitoring DO in process applications.


Inert construction will not corrode in high salinity samples

Insensitive to common interferences such as hydrogen sulfide, chloride, chlorine, ammonium, and many others

Cost effective options

Choose models for use with the economical LD500 Local Display; providing 4-20mA outputs and various communications protocols

Choose models available with integral 4-20 mA, Modbus RS-485, and SDI-12 outputs for direct connection to SCADA or PLC; totally eliminating the need for a separate transmitter/controller

No calibration hassles

When used with the LD500 Local Display, no calibration is required

When connected directly to a SCADA or PLC, a one-time calibration is performed that lasts for 12 months

Low maintenance

No electrolyte or membranes to replace

Sensor cap lasts 1 year without the need for recalibrations

Simply wipe the sensor cap periodically. Optional air blast accessory available


0.1 mg/L accuracy from 0 - 8 mg/L DO, and 0.2 mg/L accuracy from 8 to 20 mg/L DO

Fast response to oxygen and temperature changes

Consistent, reproducible results (<0.05 mg/L reproducibility)

Sensor type Luminescent dissolved oxygen sensor
Transmitter/local display Optional, not required
Range 0 to 20 mg/L concentration
0 to 200% saturation
Accuracy (DO) ±0.1 mg/L, 0 to 8 mg/L
±0.2 mg/L, 8 to 20 mg/L
Response time, cap T90: 30 sec T95: 37 sec @ 25°C (77°F)
Resolution 0.01 mg/L
Useful life of cap 1 year from first instrument reading
Shelf life of cap 2 years from date of manufacture (install within 1 year from date of manufacture)
Operating temperature 0° to 50°C (32° to 122°F)
IP rating IP-67 with cap off, IP-68 with cap installed
Compliance Heavy industrial, IEC 61000-6-2:2005
Storage conditions, cap 1° to 60°C (33° to 140°F), in factory container
Storage conditions, sensor -5° to 60°C (23° to 140°F)
Salinity range 0 to 42 PSU, fi­xed or real-time capable
pH range 2-10 pH
Barometric range 507-1115 mbar, fi­xed or real-time capable
Internal mounting thread 1¼-11½ NPT
Communications options Modbus RTU (RS-485), 4-20mA, SDI-12
Maximum cable length Up to 4000 ft (Modbus and 4-20 mA) or up to 200 ft (SDI-12)
Warranty Sensor: 3 years from date of manufacture
Cap: 2 years from date of manufacture


Model Description

There are no instruments for this product.


Model Description
DMROP03 Sensor cap replacement kit - must be replaced annually. Includes sensor cap, o-rings, grease and lint free cloth.
MH1222-RD Wash hardware for AdvantEDGE Optical DO sensor - attach air/water purge block to sensor body. Works with compressor and LD500 wash relay or PLC.
MH3083-RO Immersion assembly for AdvantEDGE - 7 foot PVC extension with junction box - for Optical DO sensors
OPCALKIT Calibration kit - includes calibration and storage chamber, calibration cap, storage cap and sodium sulfite.
OPNOSEKIT Nose cone replacement kit - includes nose, grease, lint free cloth and pre-installed o-ring.
OPORKIT O-ring replacement kit - includes o-ring for sensor body, internal nose cone o-ring, sensor cap o-rings.

Service & Repairs

Please request a Return Material Authorization(RMA) number before sending an instrument in for repair.

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Disclaimer: HF scientific product specificatons are provided for reference only. HF scientific reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on HF scientific products previously or subsequently sold.